RA Range: 12.5h

Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 1.0, THN, 1.5, 0.2, 90

Pre-imaging run?	No!	Chilean run?	No!	Special calibrations?	No!
Time critical?	No!	ToO?	No!	Carry-over run?	No!

 
 
 Single target (QSO) program requiring dark time. The goal is to obtain 
a high S/N spectrum of a V=18.4 QSO in order to improve the accuracy 
of the masurement of HD and H2 column densities, detected for the first 
time only very recently (from a previous 3h UVES spectrum). Knowledge of 
the N(HD)/N(H2) ratio could yield an independent estimate of the crucial 
D/H abundance ratio. 

 No special requirement. One ThAr calibration is attached to each science 
exposure. Program consists of 9 identical OBs, each 1.5h long. 

 
 

Run status page 69.A-0061A

README of this run:

69.A-0061A.README